The Oswald T. Avery Collection

Caption by Maclyn McCarty reads: "Tests of trial extracts made in presence of fluoride illustrating the variability of
results and the lack of reliability of fluoride as an inhibitor of inactivation. Extracts 1/40 and 2/40 were prepared with
small batches of organism and showed some (but quite limited) activity. Extract 3/40, using organisms from 30 liters of culture,
lacked transforming activity."

Item is handwritten.

Number of Image Pages:

1 (137,336 Bytes)

Date:

1940-11-05 (November 5, 1940)

Creator:

[MacLeod, Colin M.]

Contributor:

Avery, Oswald T.

Rights:

Courtesy of Maclyn McCarty.

Exhibit Category:

DNA as the "Stuff of Genes": The Discovery of the Transforming Principle, 1940-1944